PSI - Issue 72

Miloš Vorkapić et al. / Procedia Structural Integrity 72 (2025) 470 – 478

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- Differential scanning calorimetry (DSC) analysis was carried out to determine the values of glass transition temperature (Tg), using device DSC Q20 device (TA Instruments), under a nitrogen flow (50 ml min -1 ) in the temperature range from 0-200 ºC; - Tensile testing: tensile strength, elongation, and modulus of elasticity were determined at -30°C, +20°C, +50°C, using INSTRON 1122 universal testing device, at 50 mm/min speed of clamps; - Impact testing was done using a Zwick Charpy pendulum with 7.5 J maximum energy, to determine impact toughness at -30°C, +20°C, and +50°C.

Fig. 1. (a) Samples with printing orientation; (b) Manufactured samples in XZ plane for tensile testing; and (c) for Charpy impact test.

3. Results and discussion The registered FTIR spectra for the neat PLA and PLA/CF are shown in Figure 2.

Fig. 2. FTIR spectra for PLA and PLA/CF.